Mountain driving can be scary if you are driving too fast or in bad weather. We have the Angeles Crest and Angeles Forest highway here in SoCal which is windy and has steep cliffs. Every weekend people come out with their motorcycles and sports cars and try to turn it into a race course. I remember years back a carpool van with people commuting to Cal Tech from Palmdale went over the side killing the passengers. It was during the winter and it was foggy and may have been icy too.